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AVprozaik [17]
3 years ago
5

If the tire reaches a temperature of 48 ∘c, what fraction of the original air must be removed if the original pressure of 250 kp

a is to be maintained?
Physics
1 answer:
andrey2020 [161]3 years ago
7 0
Assuming air as ideal gas and amount of air in no of moles is known then by gas law,

PV= nRT

Pressure is constant

P* (change in volume) = nR* (change in temperature)
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A jetliner, traveling northward, is landing with a speed of 69 m/s. Once the jet touches down, it has 750 m of runway in which t
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Answer:

Acceleration, a=-3.14\ m/s^2

Explanation:

It is given that,

Initial speed of the jetliner, u = 69 m/s

Final speed of the jetliner, v = 6.1 m/s

Distance covered, s = 750 m

We need to find the average acceleration of the jetliner. It can be calculated using third equation of motion as :

a=\dfrac{v^2-u^2}{2s}

a=\dfrac{(6.1)^2-(69)^2}{2\times 750}          

a=-3.14\ m/s^2

So, the average acceleration of the plane during landing is -3.14\ m/s^2. Hence, this is the required solution.

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Answer:

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Explanation:

Mechanical energy is found in machines and humans.It is a sum of kinetic energy and potential energy.Mechanical energy is constant

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Explanation:

The sunlight that reaches earth is generated by a transformation of nuclear energy. Radiant energy is a from of energy that reaches the earth from nuclear reactions in the core of the sun.

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